package com.zjy.kotlinnote.koitlinnote.utils;

import android.app.Activity;
import android.content.Context;
import android.util.Log;
import android.view.View;
import android.view.inputmethod.InputMethodManager;
import android.widget.EditText;

/**
 * Created by zjy on 2016/11/24.
 */

public class KeyboardUtils {

        private KeyboardUtils() {
            throw new UnsupportedOperationException("u can't instantiate me...");
        }

        /**
         * 避免输入法面板遮挡
         * <p>在manifest.xml中activity中设置</p>
         * <p>android:windowSoftInputMode="adjustPan"</p>
         */

        /**
         * 动态隐藏软键盘
         *
         * @param activity activity
         */
        public static void hideSoftInput(Activity activity) {
            View view = activity.getCurrentFocus();
            if (view == null) {
                view = new View(activity);
            }
            InputMethodManager imm = (InputMethodManager) activity.getSystemService(Activity.INPUT_METHOD_SERVICE);
            imm.hideSoftInputFromWindow(view.getWindowToken(), 0);
        }

        /**
         * 点击屏幕空白区域隐藏软键盘（方法2）
         * <p>根据EditText所在坐标和用户点击的坐标相对比，来判断是否隐藏键盘</p>
         * <p>需重写dispatchTouchEvent</p>
         * <p>参照以下注释代码</p>
         */
        public static void clickBlankArea2HideSoftInput() {
            Log.d("tips", "U should copy the following code.");
        /*
        @Override
        public boolean dispatchTouchEvent(MotionEvent ev) {
            if (ev.getAction() == MotionEvent.ACTION_DOWN) {
                View v = getCurrentFocus();
                if (isShouldHideKeyboard(v, ev)) {
                    InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
                    imm.hideSoftInputFromWindow(v.getWindowToken(), InputMethodManager.HIDE_NOT_ALWAYS);
                }
            }
            return super.dispatchTouchEvent(ev);
        }
        // 根据EditText所在坐标和用户点击的坐标相对比，来判断是否隐藏键盘
        private boolean isShouldHideKeyboard(View v, MotionEvent event) {
            if (v != null && (v instanceof EditText)) {
                int[] l = {0, 0};
                v.getLocationInWindow(l);
                int left = l[0],
                        top = l[1],
                        bottom = top + v.getHeight(),
                        right = left + v.getWidth();
                return !(event.getX() > left && event.getX() < right
                        && event.getY() > top && event.getY() < bottom);
            }
            return false;
        }
        */
        }

        /**
         * 动态显示软键盘
         *
         * @param context 上下文
         * @param edit    输入框
         */
        public static void showSoftInput(Context context, EditText edit) {
            edit.setFocusable(true);
            edit.setFocusableInTouchMode(true);
            edit.requestFocus();
            InputMethodManager imm = (InputMethodManager) context
                    .getSystemService(Context.INPUT_METHOD_SERVICE);
            imm.showSoftInput(edit, 0);
        }

        /**
         * 切换键盘显示与否状态
         *
         * @param context 上下文
         */
        public static void toggleSoftInput(Context context) {
            InputMethodManager imm = (InputMethodManager) context
                    .getSystemService(Context.INPUT_METHOD_SERVICE);
            imm.toggleSoftInput(InputMethodManager.SHOW_FORCED, 0);
        }
}
